91 lines
1.9 KiB
Markdown
91 lines
1.9 KiB
Markdown
# Raspberry PICO
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## Introduction
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**Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces.**
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**Key features include:**
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- RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
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- Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz
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- 264KB of SRAM, and 2MB of on-board Flash memory
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- Castellated module allows soldering direct to carrier boards
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- USB 1.1 with device and host support
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- Low-power sleep and dormant modes
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- Drag-and-drop programming using mass storage over USB
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- 26 × multi-function GPIO pins
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- 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
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- Accurate clock and timer on-chip
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- Temperature sensor
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- Accelerated floating-point libraries on-chip
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- 8 × Programmable I/O (PIO) state machines for custom peripheral support
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## Supported compiler
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Support GCC 6 and above compilers.
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## Program firmware
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### Step 1: download pico sdk
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```bash
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pkgs --update
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```
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### Step 2: build
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```bash
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scons -c
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scons
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```
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**gcc version >= 6.x.x**
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### Step 3: flash
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scons generates a UF2 file:
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- Copy the rtthread-pico.uf2 file to the "RPI-RP2" disk
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- Then led blink.
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Or you can use the picotool by:
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```bash
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picotool load rtthread-pico.uf2
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picotool reboot
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```
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## Running Result
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The output information on serial port should be like this:
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```bash
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\ | /
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- RT - Thread Operating System
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/ | \ 4.0.3 build Jan 28 2021
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2006 - 2021 Copyright by rt-thread team
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Hello, RT-Thread!
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msh >
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```
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## Peripheral Condition
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| Drive | Support | Remark |
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| ----- | ------- | ------- |
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| UART | Support | UART0/1 |
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| GPIO | Support | 0-29 |
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| I2C | - | - |
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| RTC | - | - |
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| SDIO | - | - |
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| SPI | - | - |
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| TIMER | - | - |
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| WDT | - | - |
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